Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8365673 | System and method for railroad track tie plate collection from a rail bed | Mark Plyler, Dennis Grantham, Gary E. Gibson | 2013-02-05 |
| 8082852 | System and method for railroad track tie plate orientation | Mark Plyler, John B. Cook, Dennis Grantham, Michael W. Adams | 2011-12-27 |